Navigatron - I2C GPS for MultiWi and Other Projects from Flytron - RC Groups
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Mar 23, 2012, 10:17 AM
MelihK's Avatar
New Product

Navigatron - I2C GPS for MultiWi and Other Projects from Flytron

Hi Guys,

I'm glad to announce our new I2C GPS module for all opensource projects.

Navigatron is an open source I2C GPS module with onboard Arduino and Backup battery.
It is compatible with current(2.0) version of MultiWii and i guess it will be a standard for most of GPS application.

Just connect the Navigatron with your I2C lines and read the GPS values when you need it.

  • I2C communication up to 400 kHz
  • Supports all 3.3v and 5v I2C systems.
  • 10 Hz update rate (1Hz with current MultiWii firmware and updateable)
  • Ultra Sensitive -165 dBm GPS receiver
  • Optional serial access to NMEA data (cross the Tx and Rx pins of FTDI to reading GPS module)
  • 3D Fix LED indicator
  • 1 week backup time with Super Capacitor
  • 3.3v supply voltage (You should replace the charge diode of supercapacitor with a blue LED for 5v supply)
  • Dimension:33mm x 23mm x 8mm
  • MediaTek Single Chip
  • Patch Antenna Size 15mm x 15mm x 4mm
  • L1 Frequency, C/A code, 66 channels
  • Embedded LNA and SAW filter
  • With Active patch antenna
  • High Sensitivity Up to -163 dBm tracking, superior urban performances
  • Position Accuracy < 3m CEP (50%) without SA (horizontal)
  • Cold Start is Under 35 seconds (Typical)
  • Warm Start is Under 34 seconds (Typical)
  • Hot Start is Under 1 second (Typical)
  • Low Power Consumption 48mA @ acquisition, 37mA @ tracking
  • Low shut-down current consumption 15uA, typical
  • DGPS(WAAS, EGNOS, MSAS) support (optional by firmware)
  • Support AGPS function ( Offline mode : EPO valid up to 14 days )

Product Details:

If you have any question about it, please feel free

Have a nice weekend
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Apr 03, 2012, 10:16 PM
Rank Amatuer
FullmoonCat's Avatar
Nobody commented on this? Craziness. So, to spark conversation, how would one go about hooking this up to a MultiWii board, such as my Quadrino? I'd love to try GPS features.
Apr 05, 2012, 04:48 AM
MelihK's Avatar
Originally Posted by FullmoonCat
Nobody commented on this? Craziness. So, to spark conversation, how would one go about hooking this up to a MultiWii board, such as my Quadrino? I'd love to try GPS features.
Yes you right
We are talking about this on MultiWii forum
I guess there is no MultiWii user here

It is very simple and useful device and resolving very big problem of all gps integration projects.

I'm using it with my mq-200 micro quad
Apr 18, 2012, 01:20 PM
Youtube: TomRi25
Dr.Tom's Avatar
I bought your navigatron GPS ( order # 3263)

is this correct way to connect it to 3.3V side of I2C on CRIUS SE?

and if the 3v3 power regulators wont provide enough mA (+50 needed for your navigatron),
I'll hook it onto 5V BEC(install LED, as you suggest) that feeds whole FC, is this side of I2C then OK?

Do you maybe have any video of it on multicopter, gps hold & RTH ?
Sure will post mine if all works OK.

Last edited by Dr.Tom; Apr 18, 2012 at 02:08 PM.
Apr 18, 2012, 02:49 PM
MelihK's Avatar
Hi Tom,

I dont have any experience with Crius boards but i saw MIC series voltage regulator on the board. My OpenLRS boards using same chip regulator for Atmel + sensors + Navigatron + RF module without any problem.

Please check the circuit diagram and find I2C sensor lines and 3.3v sensor supply for attaching your navigatron. I'm suggesting 3.3v mode of it for your setup.

I tested GPS functions on my 20cm MicroQuad (MQ-200) but wind speed was high and my quad didnt turn to home with current multiwii gains. This year, the wing was 10 times faster than previous years in istanbul. (Today was 120km!!!, 3 people killed by flying bricks or something) Maybe time to buying a windmill :/
I hope i will test it in one week.
Apr 19, 2012, 11:16 AM
Youtube: TomRi25
Dr.Tom's Avatar
OK, thnx.
I don't have circuit diagrams of CRIUS SE board but will double check before connecting,
by tracing lines from I2C sensors back to LLC via multimeter, to be sure where to hook up

the voltage regulators are LG33 and LG50,
it's more complex spec. table than I expected, don't understand all info there but i think it is capable of 500mA max, so should be ok.

Wishing you good luck with gps test flight,
Hope you will record some of it and post here, so we can see how it works.
I sure will when my Navigatron arrives
Last edited by Dr.Tom; Apr 19, 2012 at 12:32 PM.
Jun 16, 2012, 05:33 PM
Youtube Johnbrum26
im interested to see how to connect this to my quadrino V1e board anyone do this yet?
Jun 20, 2012, 09:23 PM
Registered User
so this gps sensor can plug directly into this board?

Jun 21, 2012, 12:47 PM
Youtube Johnbrum26
So looking at and reading the quadrino manual it looks like.

Most I2C sensors now use a 3.3v I2C bus. The Quadrino uses mosfet level converters to provide bus translation between the ATmega328 (Arduino) and the sensors. You can expand the number of sensors by wiring more sensors through this header.
Jun 23, 2012, 10:42 AM
Youtube Johnbrum26
where is everyone on this thread i though this would be a hot topic.
Jun 25, 2012, 09:55 PM
The-8's Avatar
Thanks Killab! That is what I had figured, but was unsure.

So if I were to connect this GPS, I would then have to connect i2c sonar to the 5v i2c right?

SGsoar, it looks like the upper left is where your 3.3v i2c port is..
Aug 09, 2012, 12:21 AM
Registered User
mentony32's Avatar
I just ordered one to try with a Quadrino. Will report back how it goes.
Aug 09, 2012, 07:18 PM
Youtube Johnbrum26
Me too, so anxious to get it. I'll even brave the 100+ degree summer weather to try it out.

I'll report back when I get it
Aug 22, 2012, 07:21 AM
Registered User
mentony32's Avatar

Navigatron on Quadrino

I received my Navigatron tonight and wired it up. Pretty much plug-and-play so far. Will test fly tomorrow if the wind here lets up !
Aug 22, 2012, 09:26 AM
Youtube Johnbrum26
Got mine as well, On the bench it fired right up and locked 9 sats. Will test when my new frame arrives. Qav500

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